Question: How well do airlines keep to their schedules? To help answer this question, an economist conducted a survey of 780 takeoffs in the United States

How well do airlines keep to their schedules? To help answer this question, an economist conducted a survey of 780 takeoffs in the United States and determined that 77.4% of them departed on time (defined as a departure that is within 15 minutes of its scheduled time). There were 7,140,596 flight departures in the United States in 2005. Estimate with 95% confidence the total number of on-time departures.

Step by Step Solution

★★★★★

3.40 Rating (163 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

zestimator of p Total n... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

398-M-S-C-S-T (97).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

How are IFRS currently used in the United States and how might they be used in the future based upon the SECs IFRS Roadmap?

A financial services company conducted a survey of a random sample of its customers. One of the items on the survey was as follows:"The staff at my local branch can provide me with good advice on my...

The Principal Financial Group conducted a survey of 1172 employees in the United States between July 28, 2010, and August 8, 2010, and asked if they were currently participating in the...

Hi, can you help me with this question? I attached the file and other people's assignment. I hope these two can help you finish my assignment. Read the article ?Who Regulates Whom and How?? in the...

Detroit: The Case of Bankruptcy of a City Government Review the attached case study. Describe and discuss five major factors that have led to the city's bankruptcy. How are the problems specifically...

I need a tutor help answer this question. Read the article ?Who Regulates Whom and How?? in the module resources and answer the following prompts in your initial post: Identify three policy problems...

Journal article Analysis on Ethical leadership Please write introduction summary and discussion. ethical leadership Given prominent ethical scandals in virtually every type of organization, the...

Evaluation and Control in Strategic Management Evaluation and control information consists of performance data and activity reports (gathered in Step 3 in Figure 11-1). If undesired performance...

Confirming Pages C H A P T E R 19 Analyzing Information and Writing Reports Chapter Outline Using Your Time Efficiently Analyzing Data and Information for Reports Identifying the Source of the Data...

NEED THIS ASAP PLEASE AND THANK YOU IN ADVANCE. HAVE A NICE DAY! The Battle for Value, 2004: FedEx Corp. vs. United Parcel Service, Inc. FedEx will produce superior financial returns for shareoners...

What is sustainability reporting? Why would a company choose to provide a sustainability report? Why would it pay for independent assurance?

Larkspur , Inc. is considering purchasing equipment costing $ 72000 with a 6 -year useful life. The equipment will provide annual cost savings of $ 18000 and will be depreciated straight-line over...

Question content area bottom Part 1 A . By tying compensation to performance, the shareholders effectively give the manager an ownership stake in the firm. B . During the 1 9 9 0 s , most companies...

2. How does a firm use financial ratios? Who else might use financial ratios and why?

A state executive claims that the average number of acres in western Pennsylvania state parks is less than 2000 acres. A random sample of five parks is selected, and the number of acres is shown. At ...

The average local cell phone call length was reported to be 2.27 minutes. A random sample of 20 phone calls showed an average of 2.98 minutes in length with a standard deviation of 0.98 minute. At =...

A survey of 15 large U.S. cities finds that the average commute time one way is 25.4 minutes. A chamber of commerce executive feels that the commute in his city is less and wants to publicize this....

urgent help plese \f

Hi, need help with the following question, Topic: Hypothesis Testing, Comparing Two Population Means A researcher wants to perform a hypothesis test to see if the mean salary of the faculty in...

In a recent 5-year period, mutual fund manager Diana Sauros produced the following percentage rates of return for the Mesozoic Fund Rates of return on the market Index are given for comparison. 1 2 5...